The natural and the social world shaped the evolution of each. Knowing whom to invite to dinner is as important as knowing ...

From tool-using chimpanzees to puzzle-solving capuchins, the primate world is packed with surprising brainpower. But how do the planet’s cleverest monkeys and apes really compare with human intelligen ...

Images of him being bullied by his enclosure-mates, retreating to safety and clinging to a plushie look-alike for comfort won hearts around the world. But finally, Punch the monkey is fitting in.

The Trump Administration wants Anthropic’s A.I. model, Claude, to act like an obedient soldier; the tech firm argues that that could lead down a dangerous path.

Scientists rebuilt the face of “Little Foot,” a 3.67-million-year-old fossil, uncovering new clues about early human ...